The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 1993
Filed:
Apr. 09, 1992
Central Glass Company Limited, Ube, JP;
Abstract
The disclosure relates to a metal oxide film formed on a glass substrate by the sol-gel process using an alcohol solution of at least one metal alkoxide or acetylacetonato. To afford water repellency to the oxide film, carbon fluoride is dispersed in the metal oxide matrix by thermal decomposition of a fluoroalkylsilane compound, e.g. CF.sub.3 (CF.sub.2).sub.3 CH.sub.2 CH.sub.2 Si(OCH.sub.3).sub.3. An organic polymer, e.g. polyethylene glycol, is dissolved in the metal alkoxide or acetylacetonato solution, and the solution is applied to the glass substrate to form a sol film. By heating at a temperature not higher than 200.degree. C. the sol film turns into a porous gel film. Next, the porous gel film is impregnated with an alcohol solution of the fluoroalkylsilane compound and then heated at a temperature not lower than 500.degree. C. The obtained oxide film is good in durability and abrasion resistance, and on this film the contact angle of water drop becomes greater than 90 degrees.